Tension Friction
Tension Friction - Related Videos
08:25
Friction
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2023
Source: Nicholas Timmons, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA The goal of this experiment is to examine the physical nature of the two types of friction (i.e., static and kinetic). The procedure will include measuring the coefficients of friction for objects sliding horizontally as well as down an inclined plane. Friction is not completely understood, but it is experimentally determined to be proportional...
10:09
Tests of Hardened Concrete in Tension
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA In a previous laboratory focused on concrete in compression, we observed that concrete can withstand very large stresses under uniaxial compressive forces. However, the failures observed were not compressive failures but failures along shear planes where maximum tensile forces occur. Thus, it is important to understand the behavior of concrete in tension and particularly its maximum strength...
01:10
Tension
0 Views •
2025
Tension is a force along the length of a medium, in particular, a force carried by a flexible medium, such as a rope or cable. The word "tension" comes from Latin, meaning "to stretch". Not coincidentally, the flexible cords that carry muscle forces to other parts of the body are called tendons. Any flexible connector, such as a string, rope, chain, wire, or cable, can exert pull only parallel to its length; so, a force carried by a flexible connector is a tension with a direction parallel to...
01:10
Tension
0 Views •
2023
Tension is a force along the length of a medium, in particular, a force carried by a flexible medium, such as a rope or cable. The word "tension" comes from Latin, meaning "to stretch". Not coincidentally, the flexible cords that carry muscle forces to other parts of the body are called tendons. Any flexible connector, such as a string, rope, chain, wire, or cable, can exert pull only parallel to its length; so, a force carried by a flexible connector is a tension with a direction parallel to...
08:44
Tension Tests of Polymers
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Polymeric materials are widely used in civil structures, with uses ranging from very soft sealants to more rigid pipes in water and wastewater systems. The most basic definition of a polymer is a molecular structure with repeating subunits. The term polymer comes from Greek, where "poly" means many, and "-mer" means basic unit. Monomers, or single mers, are the specific repeating units. With...
FAQs
In a wrapped member, the capstan relationship links the tight-side-to-slack-side tension ratio to two main variables: the friction coefficient at the contact and the wrap angle around the cylinder. Increasing either variable raises the tension ratio that can be supported before slip. This makes geometry and surface interaction central design parameters in belts, ropes, and cables.
Greater tension presses the contacting surfaces together, increasing the frictional resistance available along their interface. That resistance helps preserve force transmission when the member carries a load, but the resulting tension distribution must still be considered alongside wear, efficiency, and safety. Thus, tension is both a force-transmission resource and a design variable that requires control.
A design that maximizes frictional resistance is not automatically optimal. The key engineering considerations include load capacity, wear, efficiency, and safety. Increasing the useful tension difference may improve force transmission, while excessive demands on the contact can make wear or safety more important. Engineers therefore evaluate the desired resistance together with the member’s operating role.
Start by identifying the tensioned member and the surface or cylinder it contacts. Then characterize the friction coefficient and wrap angle where a wrapped configuration is present, and compare the resulting tight-side and slack-side tensions. Finally, assess whether the arrangement meets the intended load, wear, efficiency, and safety requirements for the application.
Belt drives use the tension difference across the belt to transmit forces without slip, while cable systems use contact friction to manage force transfer along a cable or wire. In both cases, engineers select the arrangement by considering contact conditions and geometry, then balance transmission capability against wear, efficiency, and safety.
Hoists rely on frictional resistance in tensioned ropes or cables to carry and control loads. Brakes use the same resistance to oppose motion, while clamping devices use tension and contact to hold components together. These applications show why the principle matters beyond belt drives: the desired outcome may be load support, motion control, or secure holding.